Magnetic separator.



No. 675,l62. Patented May 28, mm.

B. NOBLE.

MAGNETIC SEPARAT-OB.

(Application filed Aug. 27, 1900.)

' (in Model.)

m: Mumps PETERS 90 PNDTGLIYHQ, WASNXNGTON. u c.

Nrrn TATES BENJAMIN NOBLE, OF DETROIT, MICHIGAN, ASSIGNOR OF ONE-HALF TOJOHN G. DIETZ, OF SAME PLACE.

MAGNETIC SEPARATOR.

SPEGIFIGA'IIQN foming part of Letters Patent No. 675,162, dated May 28,1901.

Application filed August 2'7, 1900. Serial No. 28.193. (N model.)

To all whom it may concern:

Be it known that I, BENJAMIN NOBLE, a citizen of the United States,residing at Detroit, in the county of WVayne and State of Michigan, haveinvented certain new and useful Improvements in Magnetic Separators, ofwhich the following is a specification, reference being had therein tothe accompanying drawings.

My invention relates to magnetic separators especially designed forseparating iron filings and chips from brass, copper, or otherpractically non-magnetic metals.

It is the object of the invention to obtain a machine simple andinexpensive in construction and efficient in operation; and to this endthe invention consists of the peculiar construction and arrangement ofparts, as

hereinafter described and claimed.

' and are screwed or otherwise secured in apertures in the cylinder A.Upon each of the studs B is arranged a helix or coil 0 of insulated wireadapted upon the passage of the electric current therethrough to convertsaid stud into an electric magnet. These coils are connected in circuitin such a manner as to alternately form opposite poles at the outer endsof the studs, while the cylinder Aforms a magnetic coupling between theinner ends of the studs, thus forming in effect a series ofhorseshoe-magnets. The circumferential series of coils are divided intoa plurality of sections adapted to be connected into different electriccircuits. In the drawings I have shown three sections, the magnets ofwhich are respectively indicated by the letters a, b, and c and which'are connected to a commutator, as will be hereinafter described. At theouter ends of the studs 13 are secured ing'the pole-pieces D is asheathing E, formed of brass or any suitable practically non-magneticsubstance. The cylinder A is mounted upon a shaft F by means of theheads G, arranged at opposite ends of the cylinder, said heads havinglugs or flanges d for engaging with the ends of the cylinder. Theseheads also form a support for the shield E. The shaft F is mounted in asuitable frame H, and at one end of the cylinder is arranged acommutator I. This commutator is provided with three segments 6,corresponding to three sections of electromagnets 0, each segment beingpreferably substantially about twothirds of the circle and beingarranged to overlap one-third of each of the other segments.

frepresents brushes for engaging respectively with the segments e.

The cylinder is driven by means of a geartrain comprising the gear-wheelJ on the shaft F, the gear-wheel K on a shaft arranged in rear of theshaft F, and an intermediate gear L. The shaft of the gear-wheel Kcarries a rotary brush M, which is adapted to contact with the surfaceof the shield E and rotates in ppposite directions therefrom. Tocommunicate motion to the gear-train, fixed and loose pulleys O and Oare secured to the brush-shaft and are adapted to be connected by asuitable belt with a source of power. Above and in rear of the cylinderis supported upon the frame H a hopper P, into which the material to beseparated is fed. Beneath this hopper is arranged a vibrating pan orspreader Q, pivotally secured by links Q at its rear end to the frameand at its forward end resting upon the sheathing E.

R represents fingers secured to the opposite sides of the spreader Q andextending in proximity to the heads Gr. At opposite ends of the cylinderare cams or lugs It, formed on the heads G, adapted in the rotation ofthe cylinder to engage with the fingers R, and thereby to impart alateral oscillatory movement to the spreader.

The Construction of parts being as above described, in operation thehopper is filled with the chips or filings to be separated and motion isimparted through the pulley O to the cylinder and brush. The rotation ofthe cylinder will impart a vibratory movement to the spreader, whichwill feed a thin layer of the material upon the sheathing E. By means ofsuitable electric circuits (not shown) the magnet G of two of thesections (a b, Fig. 2) are energized, so that the magnetic materialdeposited on the sheathing will be carried around through a two-thirdsrevolution of the cylinder, while the non-magnetic material, such ascopper or brass, will drop off into the receptacle U at the front of themachine. In the further revolution of the cylinder after the sect-ion bhas completely passed the division-board V the magnets thereof will becut out of circuit by the commutator, allowing the magnetic materialadhering to the shield to drop into the receptacle \V. Should any fineparticles still adhere, the brush II will disengage them. Simultaneouslywith the cutting out of the section b the section 0 (which in theposition shown in Fig. 2 is deenergized) will be thrown into the circuitbefore the first of its magnets passes beneath the front edge of thespreader Q. Thus the operation may be continued as long as desired andthe magnetic and non-magnetic material will be separated.

The object of making the pole-pieces D of the form shown in Fig. at isto form in eifect during the rotation of the cylinder a magnetic poleextending the complete Width of the machine. This will prevent thepossibility of any magnetic particles escaping the magnetic action inthe spaces between the adjoining magnets, and the result is that beforethe non-magnetic material is deposited in the receptacle U all magneticparticles have been eliminated therefrom.

In order to distribute the material from the hopper uniformly over the,pan Q, I preferably arrange a gate-board T, which is verticall yadjustable and secured by thu mb-screws T". This will permit of theadjustment of the size of the opening beneath said gate according to thefineness or coarseness of the material to be separated.

lVhat I claim as my invention is- 1. In an electromagnetic separator,thecombination of an iron cylinder, iron studs secured to and projectingradially from said cylinder and arranged to form a circumferential andlongitudinal series of pairs, coils upon said studs connected inelectric circuit to form magnetsalternately of opposite polarity in bothcircumferential and longitudinal series, all of said magnets beingmagnetically coupled by said cylinder, whereby asubstantially completemagnetic circuit may be formed by the separated magnetic materialbridging between any pair of opposite poles, and a nonmagnetic sheathingsurrounding said studs and coils.

2. An electromagnetic separator comprising a cylinder, a series ofmagnetically-interconnected horseshoe-electromagnets secured to saidcylinderand having their poles extending radially therefrom and arrangedin longitudinal and circumferential series being alternatel y ofopposite polarity, segmental polepieces at the outer end of said magnetsinclined to form zigzag separating-space between the adjacentcircumferential series, the ends of the pole-pieces of one longitudinalseries being opposite and extending completely' BENJAMIN NOBLE.

IVitnesses:

M. B. ODocnEnTY, H. 0. SMITH.

